Rotary compressor.



PATENTED JUNE 2, 1908.

G. G. PALMER.

ROTARY COMPRESSOR.

APPLICATION FILED NOV. 14, 1905.

5 O Y o 6 6 o 5 Z2 9 o 0 I4 I 1% o 2X gmvawtoc 4400mm g C47 f W //,,m: Hawa i @011 CASSIUS CLAY PALMER, OF NEW YORK, N. Y.

ROTARY COMPRESSOR.

Specification of Letters Patent.

Patented June 2, 1908.

Application filed November 14, 1906; Serial No. 287,219.

T 0 all whom it may concern:

Be it known that I, CASSIUS CLAY PALMER, a citizen of the United States, and a resident of New York city, in the county of New York,

borough of Manhattan, and State of New York, have invented certain new anduseful Im rovements 'in Rotary Compressors, of

wluch the following is a specification.

'My present invention relates to rotary compressors and has particular application to means for-relieving and reducing the fries.

tion exercised by the sliding piston blades vof my invention, is a view in elevation of a compressor embodyi my improvement, a portion of the casing't ereofbeing removed to show the interior construction,

7 As is well known, in compressors or engins embodying the principle of the radially slidin blades, considerable friction is producef in the sockets or slots formed-in the rotating piston disk, withthe consequent result that the efficiency of the engine is reduced and the period of usefulness of the same considerabl curtailed. It is my intention to obviate this difficulty by grooving or slotting the body of the p ston disk and placing therein an antifriction device, such as a pawl roller bearin against which the sliding pistons may wor in their reciprocation. 7

Referri now to the accompanyingdrawing in det fi, A indicates the casing of a compressor ada ted particularly for use 1n connection with refrigerating apparatus. This casing is approximately circular in contour and is provi ed with an inlet 5 and an outlet 6.

The numeral 7 "designates the power shaft of the engine which is e'ccentrically and roby the sliding movement of the blades tatably mounted in the casing in any well known manner. The piston disk whichvis' shown at 8 is keyed to the shaft and is provided withradially extending slots or ways 9 within which are des' ned to slide the pistonblades 10, said bla es in the present instance belng secured to rods or stems 11, 11 moving in and out of small sockets 12 formed in the hub 13 of the piston disk 8. The heads of the piston, or the surfaces which bear against the interior wall of the casing, are shown at 14. In order to reduce the motion of the piston blades in reciprocating in the slots or ways, I cut or groove a portion ofthe wall adjacent to each way, as is shown at 15,

and place within such wall an anti-friction roller or hearing 16, which is free to travel the length of the slot according to the movement of the piston blade passing over the same. -vBy this construction a highly eflicient, durable, and easy running engine is provided and one especially adapted for compressing fluid in refrigerating devices.

Having thus'described; my invention, what I claim as new and desire to secure by'Letters Patent is In a rotary compressor,i'the combination of a casing having rnletand outlet portions, a rotating shaft 'eccentrically mounted therein, a rotary piston disk carried .by said shaft and having slots of ways formed therein, pistons sliding in said. slots or ways, and antiriction rollers located in grooves or slots cut in the wall of the piston disk adjacent to the periphery of such disk andcommunicating with the piston slots 'orways, said pistons being adapted to bear against said anti-friction rollers in their reciprocating movement. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CASSIUS GLAYPALMER. Witnesses:

Rrouann B. CAVANAGH, Jos. J. PIERANno. 

